The average cost for wall spray painting in the United States ranges from $1.50 to $3.50 per square foot, with total expenses typically between $500 and $2,000 depending on project size and complexity. For a standard 10-by-10-foot room (100 square feet), the cost would be $150 to $350 before materials or additional services.

The price varies due to factors like labor rates, paint quality, equipment, and preparation work. Labor costs account for 60-70% of the total, averaging $20 to $40 per hour for professional painters. Spray paint itself costs $20 to $50 per gallon, covering 200-400 square feet, while equipment like airless sprayers or rental fees add $50 to $200. Preparation, such as cleaning walls, repairing imperfections, and applying primer, increases expenses by 20-30%. According to the 2023 HomeAdvisor report, the median cost for a 1,500-square-foot home’s exterior walls is $2,250 to $3,750, reflecting higher square footage and material upgrades. DIY projects using affordable sprayers or smaller cans can reduce costs to $0.50 to $1.50 per square foot, but professionals ensure uniformity and durability. Environmental regulations and disposal fees for paint cans may also influence pricing in some regions. Data from the National Association of the Remodeling Industry (NARI) supports these figures, noting that 65% of homeowners spend 15-25% more on spray painting than traditional brushing due to equipment and technique requirements. Ultimately, the cost balances quality, effort, and project scope, making spray painting a cost-effective option for large or complex surfaces.